Nano Archive

One-step nanoscale assembly of complex structures via harnessing of elastic instability

Zhang, Ying and Matsumoto, Elisabetta A. and Peter, Anna and Lin, Pei-Chun and Kamien, Randall D. and Yang, Shu (2008) One-step nanoscale assembly of complex structures via harnessing of elastic instability. NANO LETTERS, 8 (4). pp. 1192-1196.

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We report on a simple yet robust method to produce orientationally modulated two-dimensional patterns with sub-100 nm features over cm(2) regions via a solvent-induced swelling instability of an elastomeric film with micrometer-scale perforations. The dramatic reduction of feature size (similar to 10 times) is achieved in a single step, and the process is reversible and repeatable without the requirement of delicate surface preparation or chemistry. By suspending ferrous and other functional nanoparticles in the solvent, we have faithfully printed the emergent patterns onto flat and curved substrates. We model this elastic instability in terms of elastically interacting ``dislocation dipoles'' and find complete agreement between the theoretical ground-state and the observed pattern. Our understanding allows us to manipulate the structural details of the membrane to tailor the elastic distortions and generate a variety of nanostructures.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:2400
Deposited By:Anuj Seth
Deposited On:17 Dec 2008 11:57
Last Modified:17 Dec 2008 11:57

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